Article
The role of cysteine residues in the transport of mercuric ions by the Tn501 MerT and MerP mercury-resistance proteins.
Molecular microbiology - 1 Jul 1995
Morby A P, Hobman J L, Brown N L
Abstract excerpt
Each cysteine residue in the MerT and MerP polypeptides of bacterial transposon Tn501 was replaced by serine, and the mercury-resistance phenotypes of the mutants were determined in Escherichia coli. Cys-24 and Cys-25 in the first transmembrane region of MerT were essential for transport of mercuric ions through the cytoplasmic membrane, and mutations Cys-76-Ser, Cys-82-Ser or Gly-38-Asp in MerT or Cys-36-Ser in...
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